Desander, also known as hydrocyclone desander, makes the drilled solids removal according to centrifugation precipitating and density differential principle. In mud cleaning system, it is usually set behind shale shaker or vacuum degasser, as a 2nd or 3rd stage equipment in solids control system.

Functions

In drilling fluids cleaning or purification, the hydrocyclone desander and desilter should be configured with certain number of cones, one to three for desander and eight to twenty for desliter. To make sure the highly effective performance, the working pressure should be 0.25~0.34MPa. The desander is used to get rid of larger particles treated after shale shaker but before desilter, which means hydrocyclone desander will leave better fluids property for desilter cones that makes a separation between 15~45μm.
 

Desander Hydrocyclone

A hydrocyclone (often referred to the shortened form cyclone) is a device to classify, separate or sort particles in a liquid suspension based on the ratio of their centripetal force to fluid resistance. This ratio is high for dense (where separation by density is required) and coarse (where separation by size is required) particles, and low for light and fine particles. Hydrocyclones are also applied in the separation of liquids of different densities.

Tips on Desander

1. Make sure that pipelines, cones are kept clean, no block, leakage or fracture. Check all the valves for correct position, steady and reliable installation. Then, confirm feeding pump is all right for operation.

2. Open on mud gun, mud agitator to make feeding pump inlet clean before desander pump and desander operating. The figure should be 0.2~0.4MPa which ensures desander safe and effective performance.

3. To be noted, close desander feed inline before stopping the feeding pump. Do not stop the centrifugal pump until drilling fluids is discharged completely. Usually, desander and desilter will be combined together as a mud cleaning desander for sale.

KOSUN oilfield drilling desander is the efficient solids control equipment, we exclusively handle oil & gas drilling fluids solids control equipment and solid control system, as well as varieties of chemical agent, such as drilling shale shaker, desander, vacuum degasser, oilfield decanter centrifuge electrical ignition device, mud cleaner, sand pump, mud agitator, etc. KOSUN has been serving the oil & gas industry for 20 years since its establishment in 1992, and has obtained rich experience on equipment manufacturing & oilfield services.